Tile-forming apparatus.



L. C. NELSON. IIIIIIIIIIIIIII RTUS.

L.c. NELSON. TILE FORMING APPARATUS.

Patented Feb. 6, 1917.

2 SHEETS SHEET 2.

ff@ iV/mmf@ entran erariale narrar ernten.'

LEWIS CLIFFRD NELSON,A OF C'EFEYVILLE, KANSAS, ASSIGNOR TO LUDOWICI- CEIJADON COMPANY, OF CI-IICAGU, ILLINOIS, .A CGRPOBATIOII 0F ILLINOIS.

TILE-FGRI'IING APITARATUS.

Application filed August 14, 19;5.

To all ifs/tom t may concern.'

Be it known that I, Lnwrs CLirronn NEL- soN, a citizen of the United States, residing at Coffeyville, in the county of Montgomery and State of Kansas, have invented new and useful Improvements in rfile-Forming Apparat-us, of which the following is the speci fication.

rIhis invention relates to dies for the formation of clay roofing tile or the like, and particularly to the construction such dies and a method of their operation whereby hand trimming upon one or more edges of the completed tile is rendered unnecessary, the tile being turned out from the mold finished upon these edges.

Die-formed tile of' the prior art, in so far as I am aware, leave the molds in which they are formed with fins or excrescences upon them atitheir edges which make it necessary to trim the tile by hand to finish it. rEhis operation not only constitutes an added expense, but is objectionable because the result is usually rugged and unsightly.

It is an object of my invention to eliminate, in so far as possible, the necessity for hand trimming' the edges of the formed tile and to cause the tile to leave the dies by which they are formed finished upon one or more edges.

In the drawings: Figure l is a face elevation of the upper die. Fig. 2 -is a face elevation of the lower die. Fig. Bis a cross section of the die and tile therein. Fig. 4 is a longitudinal section of the same.

In the drawings: A represents the upper die holder provided with holes al and a2 in which the upper die is firmly seated.

B represents the lower die holder provided with dowel pins 61 and 722 to coperate with holes {t1-a2 to cause the dies to register as they are closed upon the tile.

1 represents the upper die of a pair of dies constructed according to my invention, and which, in this instance, are adapted to form roofing tile. The die l is firmly seated in the holder A, as shown. The face of the upper die l is curved, as indicated at 2, and is provided with depressions 3 and l to make corresponding cross ribs 5 and 6 upon the tile T; and with the customary nail boss, shown, these parts forming no part of my invention but being well known in the art. The casing A of the upper die at one end,

Specification of Letters Patent.

formed by the dies are closed.

Patented not. e, init.

Serial No. 45,529.

however, is extended into a flange 7 which projects downwardly away from theiiace of the die and inwardly to cover the riml oi the die. Along one side the upper die is provided with a flange 8 which extends downwardly away `from the face of the die, the holder A being similarly extended, as shown at A2. rl`he lower die 9 is firmly seated in the lower holder B and is provided with panels 9 between which is a rib-forming recess l() to 'form a longitudinal. rib l1 upon the finished tile. rlhe rims l2 and 13 oi the lower die instead of extending horizontally considerably beyond the edge of the tile, as has heretofore been customary in the art, are cut away so as to permit the flanges 7 and 8 of the upper die to overlap and close down across them with a sort of' shear action as the die is being closed. It will be seen that the lower die is actually cut away and the upper die correspondingly extended. rlihe lower holder B is also correspondingly cnt away, as indicated at Bl-B2 to accommodate the bottoms of the flanges 7 and S and the extension A2 ofthe holder for the upper die, and permits the entire upper vstructure to come to a firm seat upon the lower.

I have shown the die itself extended along one side and an equivalent effect produced by extendingthe casing along one end, the latter expedient being adopted in order to save wear on the die due Vto the shear action of the"coniplete mold in closing. In the modification disclosed the casing is not extended because in practice it is sometimes found that the clay will stick and bind if pressed against the iron casing for the whole length of the mold. However, it is obvious that the casing may be extended along the side as shown for the end, or the die itself may be extended as shown for the side, or any combination of these methods employed to suit particular conditions or kinds of clay, all within the scope of the invention.

In operation, when the dies are closed in the usual fashion, the extended edges 7 and 8 of the upper die will overlap and shear across the cut away edges 12 and 13 of the lower die before the other edges of the mold Thus two edges of the mold are completely closed when the final pressure is applied and there can be no escape of the plastic clay along those edges as the dies come home. The tile as it leaves the mold will, therefore, be finished along its edges.

Having now described my invention, l claim:

l. A pair of molding dies for tile or the like, a portion of one of which is adapted to project beyond the face of the other in the direction of the closing movement of the dies along one edge when the dies are closed to make a tile, wherebyI the corresponding edge of the tile will be trimmed during the molding operation.

2. A pair of molding dies for tile or the like, comprising a lower die and an upper die, adapted to close upon the stock to make tile, one of said dies being cut away along one edge and the other thereof provided with a projecting portion adapted to overlap and shear along said cut away edge in the direction of the closing movement of the dies as the dies are closed, to prevent the escape of plastic clay under pressure along said edge.

3. A die for tile having a flange project ing substantially normally from its face along one edge, but slightly beveled on its inner face.

ll. A pair of dies for tile or the like, one of which is cut away along two edges and the other of which is provided with projections extending substantially at right angles away from its face upon corresponding edges, whereby said edges of the mold closey first and prevent the formation of ns upon the tile upon its corresponding edges during the closing of the dies.

A mold section, comprising a casing, a

die therein, the casing being extended at one edge beyond the rim of the die and provided with an inwardly directed flange to cover and protect said rim.

6. A mold section, comprising a casing, a die therein, the casing being extended at one edge beyond the rim of the die and provided with an inwardly directed flange to cover and protect said rim, said flange terminating flush with the inner face of the rim of the die and forming an extension thereof.

' 7 A pair of dies for tile or the like, one of said dies having a flange extending normally to its face along one edge and having the other thereof correspondingly cut away to permit the extended portion of the first to overlap it in the direction of the closing movement of the dies with a shearing action whereby a flange on the tile projecting substantially normally to the body portion thereof may be formed and trimmed.

8. In apparatus of the class described, a pair of dies for forming tile which have flanges inclined to the plane of the body of the tile and trimming the outer edges of said flanges as the tile is being formed, comprising an inclined extension on one die and a corresponding edge on the other, coperatf ing to shear the outer edge of the tile flange as the dies are closed. y

9. A pair of dies adapted to close upon stock to make tile, one of said dies having a pair of flanges projecting substantially normally therefrom and adapted to shear along and overlap corresponding edges of Y the other die, whereby said overlapping edges of the mold formed by the two dies will close first and prevent the escape of clay under pressure therefrom, the other edgesA of said mold comprising abutting faces between which excess clay may escape under pressure, whereby two edges of the finished tile will be free from fins or webs.

ln witness whereof, l hereunto subscribe my name to this specification in the presence of two witnesses. Y

LEWIS CLIFFORD NELSON. Y

Witnesses F. B. lVAN HORN, H. D. KEER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

